15 celebrities you forgot guest-starred on ‘The X-Files’

A lot has changed in the pop culture landscape since “The X-Files” went off the air in 2002. Will Mulder and Scully struggle to keep up in a world where supernatural phenomena are just as likely to show up on Vine or YouTube as in the dusty files of the FBI”s basement? Where does their relationship stand? What is life like for their now TEENAGE son William?

More importantly, will any star who showed up on “The X-Files” before they were famous get to make an appearance? Everyone from Ryan Reynolds to Octavia Spencer seems to have popped up on the sci-fi drama. Some stars had cameos, some were Monsters-Of-The-Week, and some stuck around for multiple story arcs.

After the jump, take a journey back through the nostalgia of the 90s with these famous faces you completely forgot were on this show.